Chip Z'Nuff is bass player from the "80s" band Enuff Z'nuff. According Enuff Z'nuff's Wikipedia page, they made several appearances on the Stern show in the 90s and 2005. I don't recall ever hearing them myself, but I didn't really become a fan of Stern until 2000.
Anyhow, for what it's worth, we saw Adler's Appetite play at a local bar last night. Chip Z'Nuff is playing bass in this band, along with Steven Adler on drums. I was really impressed. The band sounded great. They played almost all of Guns N' Roses' Appetite for Destruction, along with several other GnR tracks. If you're into this kind of music, I'd definitely recommend checking this band out if they come through your area. They put on one hell of a show.